Grate



4 Sheets-Sheet 1.

T. O. JOY.

(No Model.)

GRATE.

No. 279,250. Patented June 12,1883.

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4 Sheets-Sheet 2. T. G. JOY.

' ,GRATE.

(No Model.)

No. 279,250. Patented June 12,1888.

Inventor;

- Wm eases (No Model.) 4 Sheets-Sheet 3.

T. G. JOY.

GRATE. No. 279,250. Patented June 12,1883.

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UNITED STATES PATENT OFFICE.

THADDEUS G. JOY, OF TITUSVILLE, PENNSYLVANIA.

GRATE.

,To aZZ whom, it may concern Be it known that I, THADDEUS 0. Joy, acitizen of the United States, residing at Titusville, in the county ofCrawford and State of Pennsylvania, have invented a new and ImprovedGrate, of which the following is a specifi'cation.

This invention relates to that class of shaking-grates in which the barsare provided with projecting teeth or short cross-bars and arranged torock on bearings. Its objects are, first, to provide a grate of thisclass in which the bars may be worked smoothly and easily through agiven range of motion for shaking out ashes and clinkers and looseningup the fuel, and may be turned farther to separate the short crossbarsby a sufficient distance to permit the contents of the grate to bedumped 1 second, to so construct and arrange the oscillating cross-barsof the grate that large lumps of coal cannot escape between the barswhile they are being worked, and that clinkers and slate will-be crushedbetween the ends of opposite rows of the cross-bars; third, to providean independent end or side dump for the grate, in addition to theprovision for dumping by turning the bars; fourth, to secure the barsagainst accidental displacement from their bearings, and to provide forthe ready replacement of abroken or burned-out bar by a new one; and,fifth, to provide the grate with outside operating means which may bedetached to permit the grate to be inelosed and readily connected foroperating the grate when desired.

With these objects in view, my invention consists in certain novelconstructions and combinations of devices, which will be hereinafterfully described, and pointed out in the ap pended claims.

In the drawings, Figure 1 is a perspective view of a grate constructedaccording to my invention. Fig. 2 is a section on the line :0 w in Fig.IL. Fig. 3 is a similar section, showing the cross-bars of the gatetilted, as in the act of shaking the grate. Fig. 4 is a perspectiveview, showing the grate dumped at the end or side, and having a portionof the base-plate broken away to expose to-view the supportsand-operatiiigconliections of the bars. Fig. 5 is a section through thebed-plate and one of the grate-bars and its supports on the line 9 g No.279,250, dated June 12, 1883.

(No model.)

of Fig. 1. Fig. 6 is a similar section, showing the bar dumped at theend. Fig. 7 is a diagram, partly in section, illustrating the construction and operation of the stops whichlimit and adjust the extent ofrocking motion of the grate bars or sections. Fig. 8 is a diagram takenat right angles to Fig. 7 and Fig. 9 is a similar diagram to Fig. 8, butillustrating the manner of dumping the grate by turning the bars withtheir hearing at one end and lower ing the bars at their other end.

The letter A designates the bed-plate, having the edge surrounding thegrateopening notched, as shown at a, to permit the passage of ashesbetween the plate and the crossbars of the grate.

B indicates the grate-bars, each of which consists of a supportingshaft,I), provided with transverse short bars I), the main portions of whichproject above the supportingshaft, and are preferably straight or fiaton their upper edges. These cross-bars are secured at the properdistance apart on the shaft by any ordinary or suitable means, and eachcrossbar has its ends which stand adjacent to other bars notched or cutaway on their lower edges to form stop-shoulder portions 0 c, thepurpose of which will be presently explained. Those cross-bars which areupon the. outer shafts have only their inwardly-projecting ends notchedor toothed and their other ends are cut off to conform to the shape ofthe opening in the bed-plate. The opening may, however, be rectangular,in which case the cross-bars would not need to be cut off. The shafts-bof the grate-bars h: ve their bearings at one end upon a bearing-bar, d,the ends of which are pivoted in lugs d, which depend from the undersurface of the bed-plate A, and each bar-shaft is provided with lugs orcollars e, whiehprojeet alongside the bearing-bar and prevent the shaftfrom moving endwise, and also prevent the bearing-bar from turning 011its pivots when not required to do so. ends of the bar-shaftsb aresupported on a The opposite crank-bar, f, the journals of which havetheir bearings in lugs f, projecting from the under surface of I thebed-plate. One of the ends of the crankbar projects outwardly beyond itsbearing, and is pl'Wided with an operatinghandle, f-'. hen the crank-baris turned up IOO the tops of the grate-bars are supported on a levelwith and close the opening in the bed plate, as shown in Fig. 1; butwhen the crankbar is turned down the grate-bars are inclined downwardlyfrom their opposite bearings, as shown in Fig. 4, and permit the chargeto be readily dumped at one side of the grate. From the under side ofthe bed-plate projects a rib, which prevents the bar-shafts I/ fromrising from their bearings on the bearing-bar (I when the grate israised; but when it is lowered, as in Fig. 4, and as illustrated also inFig. 6, the shaft-s are at such a distance from the rib 9 that they maybe readily raised to clear the collar or lugs e from the bearing-bar d,to permit the bars to be removed longitudinally. The ends of the shaftsI) are preferably beveled on their upper surfaces to give room forraising them. Each of the grate-bar shafts b has a downwardly-projectingarm, 71, having at its lower end an outwardlyproiecting pivot-pin, h,and these pivot-pins enter bearings formed for them in an operating-bar,'1, which is supported by the pivots. One end of this operating-bar isextended beyond the bed-plate, as shown at i", andhas anupwardly-projecting pin, 2', with which is loosely engaged one end of alink, k, the opposite end of which is pivoted to the lower end of anoperatinglever, L, which is fulcrumed at the end of an arm, I,projecting from the bed-plate.

It obvious that when the lever L is vibrated a rocking motion will becommunicated to the grate-bar shafts I) through the intermediateconnections which have just been described; and this rocking motion ofthe shafts will cause the cross-bars to oscillate, assuming inclinedpositions alternately in opposite directions, and thus shaking up thecharge upon the grate, and separating the ashes, clinkers, and slatefrom the live fire and fuel. In simply shaking the grate to clear it ofashes, slate, and clinkers, and to loosen up the fuel, the eross-barsshould have a limited oscillation, which will not permit them to sonearly approach a vertical positi on as to leave space enough betweenthe grate-bars for the fuel to fall through, and in order to limit therocking motion of the barshaftsb, and at the same time provide forturning them sufficiently to dump the contents of the grate between thebars, when required, I provide adjustable stops m m, which project fromthe under surface ofthe bed-plate and stand in the path ofthe adj acentarms h of the shafts I). These stops are simply metal blocks withprojecting lugs m, against which the arms h strike at the end of theirmovement. The blocks are secured to the bed-plate by slot-and-boltconnection, as shown at n, so that they may be adjusted to permit thenecessary limited rocking of the bars for shaking the g ate, or may beset farther back to permit the grate-bars to be turned through nearly aquarter-revolution, and thus bring the cross-bars to so nearly averticalposition that the fuel will all be dumped between the grate-bars. Theends of the lugs m are of such width that when the grate-bars arelowered at their dumping ends, the arms h will be carried so that theywill not strike the stops, and the bars may betherefore turned freely toassist the dumping. The lugs in may be formed 011 slide-bars, which areheld in place in any well-known manner, and thus the bolts and nuts bedispensed with.

The stop-shoulder portions 0 a at the ends of the crossbars Z) are animportant feature of my invention.

It will be observed, referring to Fig. 3, that when the ends of one rowof crossbars are lowered the ends of the next are raised, and clinkersand pieces of slate will slide down the surfaces of one set ofcross-bars and strike against the shoulders c and come under theoverhanging portions 0 of the next row, so that when the position of thebars is reversed the said slate and clinkers will be crushed, and thusprevented from clogging up the grate. Large pieces of coal cannot passunder the overhanging shoulder portions 0, and so, in case they strikethe ends of the portions 0, they will be shaken up into the fire,instead of escaping.

The link 7:, at the lower end of the operating lever L, it will beobserved, is pivoted to swing vertically, and may be readily detachedfrom the pin '5" and allowed to hang freely downward. The object of thisis to permit the space under the grate to be inclosed by a wall andaccess permitted to the operating-bar through a small door, which may beclosed ordinarily, or when the grate is not required to be shaken, andopened to permit the link it to be engaged with the pin 6.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

1. A rocking grate-bar comprising a long rocking shaft and a series ofshortcross-bars which are formed, respectively, with the notched portion0 c, which forms a stop-shoulder, and a bearing and breaking surface,sub stantially as and for the purpose described.

2. The combination of a plurality of rocking grate-bars, whichrespectively comprise a long rocking shaft and a series of shortcrossbars, which are formed, respectively, with the notched end portion,0 c, which forms a stopshoulder, and a bearing and breaking surface,substantially as and for the purpose described.

3. The combination, with the rocking gratebar shafts I), provided withthe collars or lugs e at one end, of the bearing-bar d, entering betweensaid collars, substantially as described.

4. The combination, with the grate-bar shafts b and the bearing-bar d,of the collars'or lugs e, projecting from the shafts on opposite sidesof the bearing-bar, and the rib g, projecting downward from thebed-plate, and adapted to prevent the shafts from rising from theirbearings, substantially as described.

5. The combination, with the rocking gratebar shafts b, havingdownward-proj ectin g arms IIO 71, of stops m, arranged to limit therocking and adjustablestops' m, arrangedto permit said to movement ofsaid grate, substantially as deshafts to be rocked for shaking the grateor scribed. turned for dumping it, as required, substanv 6. Thecombination, with the operating-bar tially as described.

5 i connected with the grate-bars of the operating-lever L, and the linkk, adapted to be i THAD-DEUS connected to or disconnected from the saidop- Witnesses: crating-bar at will, substantially as described. LEwIsB.SILLI AN,

7. The grate having shafts b, with arms h J ESSE SMITH.

